package script

import (
	lucifer3 "git.aiterp.net/lucifer3/server"
	"git.aiterp.net/lucifer3/server/internal/gentools"
	"strings"
	"sync"
)

type VariableSet map[string]map[string]string

func (v VariableSet) Global(key string) string {
	return v["global"][key]
}

func (v VariableSet) Match(tag string, key string) string {
	return v["match:"+tag][key]
}

func (v VariableSet) Devices(list []string, key string) string {
	return v["devices:"+strings.Join(list, ";")][key]
}

func (v VariableSet) With(sv SetVariable) VariableSet {
	curr := gentools.CopyMap(v)

	key := "global"
	if sv.Match != nil {
		key = "match:" + *sv.Match
	} else if sv.Devices != nil {
		key = "devices:" + strings.Join(sv.Devices, ";")
	}

	curr[key] = gentools.CopyMap(curr["global"])

	if sv.Value == "" {
		delete(curr[key], sv.Key)
	} else {
		curr[key][sv.Key] = sv.Value
	}

	return curr
}

type Variables struct {
	mu   sync.Mutex
	vars VariableSet
}

func NewVariables() *Variables {
	return &Variables{
		vars: make(VariableSet, 8),
	}
}

func (s *Variables) Get() VariableSet {
	s.mu.Lock()
	defer s.mu.Unlock()

	return s.vars
}

func (s *Variables) Active() bool {
	return true
}

func (s *Variables) HandleEvent(_ *lucifer3.EventBus, _ lucifer3.Event) {}

func (s *Variables) HandleCommand(bus *lucifer3.EventBus, command lucifer3.Command) {
	if sv, ok := command.(SetVariable); ok {
		newVariables := s.Get().With(sv)

		s.mu.Lock()
		s.vars = newVariables
		s.mu.Unlock()
	}
}